spring依賴注入單元測試：expected single matching bean but found 2

異常信息：org.springframework.beans.factory.UnsatisfiedDependencyException:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [com.byd.mes.bussiness.service.siteoperation.activity.ExecuteActivityService] is defined: expected single matching bean but found 2: [executeActivityService, executeActivityForTesterService]

 

解決方案：

博文鏈接地址：http://haowei0315.javaeye.com/blog/444731

@Qualifier 
@Autowired是根據類型進行自動裝配的。在上面的例子中，如果當Spring上下文中存在不止一個UserDao類型的bean時，就會拋出BeanCreationException異常；如果Spring上下文中不存在UserDao類型的bean，也會拋出BeanCreationException異常。我們可以使用@Qualifier配合@Autowired來解決這些問題。 
1. 可能存在多個UserDao實例

 

@Autowired
public void setUserDao(@Qualifier("userDao") UserDao userDao) {
    this.userDao = userDao;
}

 

這樣，Spring會找到id為userDao的bean進行裝配。 
2. 可能不存在UserDao實例

 

@Autowired(required = false)
public void setUserDao(UserDao userDao) {
    this.userDao = userDao;
}

  

 http://blog.csdn.net/hjjzhangkui/article/details/6052329